White 62: He has to play here - the white group dies first if he
starts a semeai. The result is not bad for White, though - even after 65
blacks lower side is weak.

Black 75-99: Both sides strain as hard as possible - the issue is
not so much whether Black lives in the corner as what happens on the
outside while he is doing so. If 98' is at 99, Black plays below 91
saving his two stones 93 and 95 and getting a big centre.

White 100: Both players have been waiting for this one - Blacks
overplay at 23 comes home to roost.

Black 105: Misses the best play - this should have been at 133,
White cannot reply one point above (Black would descend at 106 and
kill)- so he would have to cut at 145, allowing Black to cut through the
centre, securing his stones absolutely. This would separate six white
stones in the centre, and with weakish stones in the centre White would
be unable to invade the right side deeply. Thus Black would get
compensation for sacrificing his two stones.

White 114, 116: These two stones are Whites profit from his attack,
now 118 becomes a severe invasion and Black has little chance of getting
enough territory.

White 140: Very solid, and almost sente - now White is definitely
winning.